maeqtt/session/expiry.go

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2021-10-16 23:38:23 +02:00
package session
import (
"time"
"badat.dev/maeqtt/v2/subscription"
)
type Expiry struct {
ExpiryInterval time.Duration
expireTimer time.Timer
RemoveSessionChannel
}
func NewExpiry(channel RemoveSessionChannel) Expiry {
expiry := Expiry {}
expiry.RemoveSessionChannel = channel
expiry.expireTimer = *time.NewTimer(time.Hour*9999)
expiry.expireTimer.Stop()
return expiry
}
// Channel for removing a session from the global state
type RemoveSessionChannel chan string
func (s *Session) expireSession() {
subscription.Subscriptions.RemoveSubsForChannel(s.SubscriptionChannel)
s.RemoveSessionChannel <- *s.ClientID
}
// newTime is nullable
func (s *Session) SetExpireTimer(newTime *uint32) {
var expiry = uint32(0)
if newTime != nil {
expiry = *newTime
} else {
expiry = uint32(0)
}
s.ExpiryInterval = time.Duration(expiry) * time.Second
}
func (s *Session) resetExpireTimer() {
if s.ExpiryInterval == 0 {
s.expireTimer.Stop()
} else {
s.expireTimer.Reset(s.ExpiryInterval)
}
}